Lock nut



May- 1s 192e. 1,585,627 l D. oBRlEN LOCK NUT Filed July 6. 1925 7] HY? y i, Z145 75 l l i A/j 6 Km Y Tl ff@ WITNEssEs INVENTOR Patented May 18, 1926.

UNETEEE STA? DANIEL OBRIEN, OF PALES'INE, TEXAS.

Loox NUT.

Application filed July G, 1925. Serial No. 41,740.

My invention relates to lock nuts to be applied to ordinary bolts for holding` the .nut immovable.

The prime objectl of my invention is to provide a lock nut made in sections after the manner of a split nut, the one section having' arms between which the other section is received, together with Wedge means to tightly bind the sections on the bolt in a manner to prevent the displacement of the nut or a relative displacement of the nut sections.

The present invention is designed more particularly as an improvement on the lock nut forming the subject-matter of United States Patent Number 1,530,396, granted to me March 17, 1925.

The particular object of the present invention is to improve the patented nut lock referred to especially with respect to strengthening that split nut section having the arms as Well as to provide for a more effective interengagement and locking of the part-s.

Reference is to be had to the accompanying drawings formii'ig a part'of this specification, it being understood that the drawings are merely illustrative of one example of the invention.

Figure 1 is a front view of a lock nut embodying my invention, showing the same applied;

Figure 2 is a section on the line 22, Figure l;

Figure 3 is a partly sectional front view of the separated elements of my improved lock nut.

My improved lock nut is applicable to the threads 11 of any ordinary bolt 10 for uniting two parts, a fragment of one of which is indicated at A.

The nut is given the general form of a split nut being composed of complementary sections 12, 'i3 adapted to meet at the median line of the nut. The one section as 12 is formed with parallel side arms 14 between which the. other nut section 13 is snugly received. The said arms 111 are formed with holes 15 adapted to receive a key 16. The corresponding walls or sides 15, 15b, of the holes 15 are preferablj)7 in the saine inclined plane to conform to the inclined side of the key which is wedgeshaped, the opposite side of the wedge or that side bearing against the nut section 13 being` parallel with the adjacent side of said nut section to give a firm bearing` against the latter. The key may be formed with a hole 17 to receive a Cotter pin 18. VThe numeral 116 represents a Washer on key 16.

Vith the nut section placed on the bolt and the key 16 driven home, it will be obvious that the nut sections firmly bint` against the bolt to prevent a relative turning' of the nut and bolt.

The numeral 1%) indicates the semi-circuar threaded recesses of the respective sections of the split nut.

ln accordance with the present invention, the arms 14 at the free ends thereof are united by an integral cross bar or girt 2O adjacent to which the holes 15 are formed. Also, in the present invention the split nut sections 13 at the back thereof is forni-ed vith a longitudinal groove 113 which partially receives the key 16, so that the key and said nut section interlock. rlfhe construction results in increased strength and results in a more effective holding of the parte.

l would state, furthermore, that 'while the illustrated example constitutes a practical embodiment of my invention, I do not limit myself strictly to the exact details herein illustrated, since, manifestly, the same can be considerably 1red without departure from the spirit of the invention as defined in the appended claims. For example, it will be evident that other means than Cotter pin 1S may be employed to fasten key 1G.

Having thus described my invention, claim:

1. A lock nut formed in two sections to constitute it a split nut, one of the sections having` arms between which the other section of a nut is received, a cross bar integral with the arms and uniting the same at the free ends thereof, said arms having holes therein between the second nut section and the said cross bar, and a wedge key refeivable in said holes and `adapted to bind the nut sections firmly on a bolt.

2. A lock nut formed in two sections to constitute it a. splitnut, one of the sections having arms between which the othe' section 01 a uut is received, a Cross but' integral 5 with the anus and uniting/the same at the free ends thereof, said arms having holes therein between the second nut seeton and the said cross bar, and e Wedge key receivable in said holes and adapted to bind 'the nut sections irmly on a bolt, said secondmentoned section having a longitudinal `groove in the backthel'eo'f partially recelving the said key.

DANEL OBRIEN. 

